ParagonIE_Sodium_Core32_Int64::addInt64() public WP 1.0

Adds two int64 objects

{} It's a method of the class: ParagonIE_Sodium_Core32_Int64{}

No Hooks.

Return

ParagonIE_Sodium_Core32_Int64.

Usage

$ParagonIE_Sodium_Core32_Int64 = new ParagonIE_Sodium_Core32_Int64();
$ParagonIE_Sodium_Core32_Int64->addInt64( $addend );

$addend(ParagonIE_Sodium_Core32_Int64) (required)

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Code of ParagonIE_Sodium_Core32_Int64::addInt64() ParagonIE Sodium Core32 Int64::addInt64 ^{WP 5.9}

public function addInt64(ParagonIE_Sodium_Core32_Int64 $addend)
{
    $i0 = $this->limbs[0];
    $i1 = $this->limbs[1];
    $i2 = $this->limbs[2];
    $i3 = $this->limbs[3];
    $j0 = $addend->limbs[0];
    $j1 = $addend->limbs[1];
    $j2 = $addend->limbs[2];
    $j3 = $addend->limbs[3];

    $r3 = $i3 + ($j3 & 0xffff);
    $carry = $r3 >> 16;

    $r2 = $i2 + ($j2 & 0xffff) + $carry;
    $carry = $r2 >> 16;

    $r1 = $i1 + ($j1 & 0xffff) + $carry;
    $carry = $r1 >> 16;

    $r0 = $i0 + ($j0 & 0xffff) + $carry;
    $carry = $r0 >> 16;

    $r0 &= 0xffff;
    $r1 &= 0xffff;
    $r2 &= 0xffff;
    $r3 &= 0xffff;

    $return = new ParagonIE_Sodium_Core32_Int64(
        array($r0, $r1, $r2, $r3)
    );
    $return->overflow = $carry;
    $return->unsignedInt = $this->unsignedInt;
    return $return;
}